Physicochemical and Functional Properties of Protein from Pleurotus nebrodensis

To further enhance the use of Pleurotus nebrodensis proteins(FPs),the exhalation rate and physicochemical properties of proteins were separated out when the percentage base saturation was equal to 60%(F60),80%(F80),90%(F90),which were named FPs collectively. And the precipitation rate,physicochemical properties of FPs and the functional properties of F60 were determined. The results showed the exhalation rate of F60(65.62%)was higher than F80 and F90. No significant difference of the content of disulfide bond was found between FPs(p>0.05). FPs had one band(at about 31 kDa)and the protein bands of FPs existed differences. F60 exhibited higher surface hydrophobicity and fluorescence intensity,and included more β-sheet than F80 and F90. F60 exhibited good solubilities,foaming capacities,and excellent in-vitro digestibilities. Pleurotus nebrodensis proteins is a kind of high grade protein resource.